ADAGE CAPITAL PARTNERS GP, L.L.C.

Position in ATRC — AtriCure, Inc.

CIK 1165408 Boston, MA

Position in ATRC

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$2,798,000

-$1,481,500 QoQ

Shares Held

100,000

-33.3% QoQ

Ownership

0.197%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#64

of 250 holders

Holding Since

Mar 2020

13 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

ADAGE CAPITAL PARTNERS GP, L.L.C. holds $201,912,602 across 10 Medical Instruments & Supplies names. ATRC ranks #8 (1.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ISRG	Intuitive Surgical Inc	327,683	$130,312,975
2	WST	West Pharmaceutical Services Inc	59,007	$21,183,513
3	BDX	Becton Dickinson & Co	90,704	$13,726,236
4	COO	Cooper Companies, Inc.	173,860	$12,467,500
5	SOLV	Solventum Corp	89,722	$6,922,052
6	BAX	Baxter International Inc	288,347	$6,147,558
7	MMED	MiniMed Group, Inc.	300,000	$4,485,000
8	ATRC	AtriCure, Inc. This page	100,000	$2,798,000

13 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$2,798,000	100,000	-33.3%	Shares	Sole	2026-08-14
2026-03-31	$4,279,500	150,000	+36.1%	Shares	Sole	2026-05-15
2025-12-31	$4,359,907	110,210	-37.0%	Shares	Sole	2026-02-17
2025-09-30	$6,168,750	175,000	-36.4%	Shares	Sole	2025-11-14
2025-06-30	$9,011,750	275,000	0.0%	Shares	Sole	2025-08-14
2025-03-31	$8,871,500	275,000	-8.3%	Shares	Sole	2025-05-15
2024-12-31	$9,168,000	300,000	+100.0%	Shares	Sole	2025-02-14
2024-06-30	$3,415,500	150,000	-25.0%	Shares	Sole	2024-08-14
2022-12-31	$8,876,000	200,000	+300.0%	Shares	Sole	2023-02-14
2020-12-31	$2,783,500	50,000	-73.7%	Shares	Sole	2021-02-16
2020-09-30	$7,581,000	190,000	-36.7%	Shares	Sole	2020-11-16
2020-06-30	$13,485,000	300,000	-66.7%	Shares	Sole	2020-08-14
2020-03-31	$30,231,000	900,000	—	Shares	Sole	2020-05-15
No filing history on record for this holder in this stock.